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// Test basic transaction error handling.
// @tags: [uses_transactions]
(function() {
"use strict";
const dbName = "test";
const collName = "transaction_error_handling";
const testDB = db.getSiblingDB(dbName);
testDB.runCommand({drop: collName, writeConcern: {w: "majority"}});
assert.commandWorked(testDB.runCommand({create: collName, writeConcern: {w: "majority"}}));
const sessionOptions = {
causalConsistency: false
};
const session = testDB.getMongo().startSession(sessionOptions);
const sessionDb = session.getDatabase(dbName);
const sessionColl = sessionDb.getCollection(collName);
jsTestLog("Test that we cannot abort or commit a nonexistant transaction.");
// Cannot abort or commit a nonexistant transaction.
try {
assert.commandWorked(session.commitTransaction_forTesting());
} catch (e) {
assert.eq(e.message, "There is no active transaction to commit on this session.");
}
try {
assert.commandFailedWithCode(session.abortTransaction_forTesting(),
ErrorCodes.NoSuchTransaction);
} catch (e) {
assert.eq(e.message, "There is no active transaction to abort on this session.");
}
// Try to start a transaction when the state is 'active'.
jsTestLog("Test that we cannot start a transaction with one already started or in progress.");
session.startTransaction();
try {
session.startTransaction();
} catch (e) {
assert.eq(e.message, "Transaction already in progress on this session.");
}
// Try starting a transaction after inserting something.
assert.commandWorked(sessionColl.insert({_id: "insert-1"}));
// Try to start a transaction when the state is 'active'.
try {
session.startTransaction();
} catch (e) {
assert.eq(e.message, "Transaction already in progress on this session.");
}
// At this point, the transaction is still 'active'. We will commit this transaction and test
// that calling commitTransaction again should work while calling abortTransaction should not.
assert.commandWorked(session.commitTransaction_forTesting());
jsTestLog("Test that we can commit a transaction more than once.");
// The transaction state is 'committed'. We can call commitTransaction again in this state.
assert.commandWorked(session.commitTransaction_forTesting());
jsTestLog("Test that we cannot abort a transaction that has already been committed");
// We cannot call abortTransaction on a transaction that has already been committed.
try {
assert.commandFailedWithCode(session.abortTransaction_forTesting(),
ErrorCodes.NoSuchTransaction);
} catch (e) {
assert.eq(e.message, "Cannot call abortTransaction after calling commitTransaction.");
}
// Start a new transaction that will be aborted. Test that we cannot call commit or
// abortTransaction on a transaction that is in the 'aborted' state.
session.startTransaction();
assert.commandWorked(sessionColl.insert({_id: "insert-2"}));
assert.commandWorked(session.abortTransaction_forTesting());
jsTestLog("Test that we cannot commit a transaction that has already been aborted.");
// We cannot call commitTransaction on a transaction that has already been aborted.
try {
assert.commandWorked(session.commitTransaction_forTesting());
} catch (e) {
assert.eq(e.message, "Cannot call commitTransaction after calling abortTransaction.");
}
jsTestLog("Test that we cannot abort a transaction that has already been aborted.");
// We also cannot call abortTransaction on a transaction that has already been aborted.
try {
assert.commandFailedWithCode(session.abortTransaction_forTesting(),
ErrorCodes.NoSuchTransaction);
} catch (e) {
assert.eq(e.message, "Cannot call abortTransaction twice.");
}
jsTestLog(
"Test that a normal operation after committing a transaction changes the state to inactive.");
session.startTransaction();
assert.commandWorked(sessionColl.insert({_id: "insert-3"}));
// The transaction state should be changed to 'committed'.
assert.commandWorked(session.commitTransaction_forTesting());
// The transaction state should be changed to 'inactive'.
assert.commandWorked(sessionColl.insert({_id: "normal-insert"}));
try {
assert.commandWorked(session.commitTransaction_forTesting());
} catch (e) {
assert.eq(e.message, "There is no active transaction to commit on this session.");
}
jsTestLog(
"Test that a normal operation after aborting a transaction changes the state to inactive.");
session.startTransaction();
assert.commandWorked(sessionColl.insert({_id: "insert-4"}));
// The transaction state should be changed to 'aborted'.
assert.commandWorked(session.abortTransaction_forTesting());
// The transaction state should be changed to 'inactive'.
assert.commandWorked(sessionColl.insert({_id: "normal-insert-2"}));
try {
assert.commandFailedWithCode(session.abortTransaction_forTesting(),
ErrorCodes.NoSuchTransaction);
} catch (e) {
assert.eq(e.message, "There is no active transaction to abort on this session.");
}
session.endSession();
}());
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